One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10,15,18)(11,19,13,16)(12,21,22,20)(14,23,24,17)(1,3,5,4)(2,6,8,7)(9,11)(10,16)(12,17)(13,15)(14,20)(18,19)(21,24)(22,23)(1,3,5,4)(2,7,8,6)(9,12,15,22)(10,11,18,13)(14,19,24,16)(17,20,23,21)(9,13)(10,12)(11,15)(14,21)(16,23)(17,19)(18,22)(20,24) involution — undirected(1,4,5,3)(2,7,8,6)(9,14,15,24)(10,17,18,23)(11,20,13,21)(12,19,22,16)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.